Home / 12,214.24-18,328.80-4,422.40

Finding the Fourth Proportional to 12,214.24, 18,328.80 and 4,422.40

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Solution

The fourth proportional to 12,214.24, 18,328.80 and 4,422.40 is: 6,636.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.24 : 18,328.80 = 4,422.40 : x
  2. Step 2: Convert to fraction form
    12,214.24/18,328.80 = 4,422.40/x
  3. Step 3: Cross multiply
    12,214.24x = 18,328.80 × 4,422.40
  4. Step 4: Simplify right side
    12,214.24x = 81,057,285.12
  5. Step 5: Solve for x
    x = 81,057,285.12/12,214.24
  6. Step 6: Final answer
    x = 6,636.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.